Abraham J Domb, Rock, M, Schwartz, J, Perkin, C, Yipchuk, G, Broxup, B, and Villemure, JG. 1994. “Metabolic Disposition And Elimination Studies Of A Radiolabelled Biodegradable Polymeric Implant In The Rat Brain”. Biomaterials, 15, 9, Pp. 681–688.